diff --git a/src/build/SharedDeps.zig b/src/build/SharedDeps.zig
index 1b24c7429..581b0b64e 100644
--- a/src/build/SharedDeps.zig
+++ b/src/build/SharedDeps.zig
@@ -146,7 +146,27 @@ pub fn add(
                 .target = target,
                 .optimize = optimize,
             });
-            c.defineCMacro("ZIG_TARGET", @tagName(target.result.os.tag));
+            inline for (@typeInfo(std.Target.Os.Tag).@"enum".fields) |field| {
+                c.defineCMacro(
+                    b.fmt(
+                        "ZIG_TARGET_{s}",
+                        .{try std.ascii.allocUpperString(b.allocator, field.name)},
+                    ),
+                    b.fmt("{d}", .{field.value}),
+                );
+            }
+            c.defineCMacro(
+                "ZIG_TARGET",
+                b.fmt(
+                    "ZIG_TARGET_{s}",
+                    .{
+                        try std.ascii.allocUpperString(
+                            b.allocator,
+                            @tagName(target.result.os.tag),
+                        ),
+                    },
+                ),
+            );
             switch (target.result.os.tag) {
                 .macos => {
                     const libc = try std.zig.LibCInstallation.findNative(.{
diff --git a/src/pty.c b/src/pty.c
index f4f25ad5e..4708d0b4e 100644
--- a/src/pty.c
+++ b/src/pty.c
@@ -1,11 +1,11 @@
-#if ZIG_TARGET == freebsd
+#if ZIG_TARGET == ZIG_TARGET_FREEBSD
   #include <termios.h> // ioctl and constants
   #include <libutil.h> // openpty
   #include <stdlib.h> // ptsname_r
   #include <unistd.h> // tcgetpgrp
 #endif
 
-#if ZIG_TARGET == linux
+#if ZIG_TARGET == ZIG_TARGET_LINUX
   #define _GNU_SOURCE // ptsname_r
   #include <pty.h> // openpty
   #include <stdlib.h> // ptsname_r
@@ -13,7 +13,7 @@
   #include <unistd.h> // tcgetpgrp, setsid
 #endif
 
-#if ZIG_TARGET == macos
+#if ZIG_TARGET == ZIG_TARGET_MACOS
   #include <sys/ioctl.h> // ioctl and constants
   #include <sys/ttycom.h>  // ioctl and constants for TIOCPTYGNAME
   #include <sys/types.h>